fix clang for cmake on ubuntu

scripts/build.sh

@@ -66,6 +66,7 @@ if [ "$(uname)" = 'Darwin' ]; then
 else
     SYSTEM_INFO="$(system_info)"
     SYSTEM_PLATFORM="$(system_arch)"
+    source /etc/os-release
 fi
 SYSTEM_CPU_MAX="$(( $(nproc) - 2 ))"
 SYSTEM_OS_VERSION="$(system_os)"
@@ -124,16 +125,19 @@ if [ "$(uname)" = 'Darwin' ]; then
     export CXX="$(brew --prefix)/opt/llvm@${CLANG_VERSION}/bin/clang++"
     CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD} -DCMAKE_CXX_FLAGS=-stdlib=libc++ -DCMAKE_APPLE_SILICON_PROCESSOR=${SYSTEM_PLATFORM}"
 elif [ "$(uname)" = 'Linux' ]; then
-    if [ "${USE_GCC}" = 'true' ]; then
+    if [ "$USE_GCC" = 'true' ]; then
         export CC="gcc-${GCC_VERSION}"
         export CXX="g++-${GCC_VERSION}"
         CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD}"
     else
+        if (( $(echo "${VERSION_ID} < 22.04" | bc -l) )); then
+            CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD} -DCMAKE_CXX_FLAGS=-stdlib=libc++"
+        else
+            CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD}"
+        fi
         export CC="clang-${CLANG_VERSION}"
         export CXX="clang++-${CLANG_VERSION}"
-        CMAKE_VARS="-DCXX_STANDARD=c++${CXX_STANDARD}
-        -DCMAKE_CXX_FLAGS=-stdlib=libc++
-        -DCMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES=/usr/include/c++/12:/usr/include/x86_64-linux-gnu/c++/12"
+
     fi
 else
     echo 'ERROR: This build script only supports Linux and MacOS.'

scripts/setup.sh

@@ -152,12 +152,13 @@ else
         unzip \
         coreutils \
         lsb-release \
+        bc \
         rsync \
         wget \
         libunwind-dev \
         zlib1g-dev \
         vulkan-tools \
-        libvulkan1 \
+        libvulkan1
         # vulkan vulkan-utils
 fi